import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '../components/Welcome.vue'
import Users from '../components/user/Users.vue'
Vue.use(VueRouter)

const router = new VueRouter({
  routes: [
    {
      path: '/login',
      component: Login
    },
    {
      path: '/home',
      name: 'Home',
      redirect: '/welcome',
      component: Home,
      children: [{
        path: '/welcome',
        name: 'welcome',
        component: Welcome
      },
      {
        path: '/users',
        component: Users
      }]
    }

  ]
})

// 挂在路由导航守卫
router.beforeEach((to, from, next) => {
  // to将要访问的路径
  // from代表从哪一个路径跳转过来
  // next（）放行或者强制跳转
  if (to.path === '/login') return next()
  // 获取token
  const tokenStr = window.sessionStorage.getItem('token')
  if (!tokenStr) return next('/login')
  next()
})
export default router
